PROCESS FOR PREPARING 6-ISOPROPENYL-3-METHYL-9-DECENYL ACETATE AND INTERMEDIATES THEREOF
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:US20210323903A1
公开(公告)日:2021-10-21
A process for process for preparing 6-isopropenyl-3-methyl-9-decenyl acetate of the following formula (3), wherein Ac represents an acetyl group, the process comprising steps of: preparing a nucleophilic reagent, 5-isopropenyl-2-methyl-8-nonenyl compound, of the following general formula (1): wherein M
1
represents Li, MgZ
1
, ZnZ
1
, Cu, CuZ
1
, or CuLiZ
1
, wherein Z
1
represents a halogen atom or a 5-isopropenyl-2-methyl-8-nonenyl group, from a 5-isopropenyl-2-methyl-8-nonenyl halide compound of the following general formula (4): wherein X
1
represents a halogen atom; subjecting the nucleophilic reagent (1), 5-isopropenyl-2-methyl-8-nonenyl compound, to an addition reaction with at least one electrophilic reagent selected from the group consisting of formaldehyde, paraformaldehyde, and 1,3,5-trioxane, followed by a hydrolysis reaction to form 6-isopropenyl-3-methyl-9-decenol of the following formula (2); and acetylating 6-isopropenyl-3-methyl-9-decenol (2) to form 6-isopropenyl-3-methyl-9-decenyl acetate (3).
以下是该过程的中文翻译:制备下列式(3)的6-异丙烯基-3-甲基-9-癸烯基醋酸酯的制备过程,其中Ac代表乙酰基,该过程包括以下步骤:制备亲核试剂,下列一般式(1)的5-异丙烯基-2-甲基-8-壬烯基化合物:其中M1代表Li,MgZ1,ZnZ1,Cu,CuZ1或CuLiZ1,其中Z1代表卤素原子或5-异丙烯基-2-甲基-8-壬烯基基团,从下列一般式(4)的5-异丙烯基-2-甲基-8-壬烯基卤化物化合物制备:其中X1代表卤素原子;将亲核试剂(1)5-异丙烯基-2-甲基-8-壬烯基化合物与选择自甲醛、多聚甲醛和1,3,5-三噁烷的至少一种亲电试剂进行加成反应,随后进行水解反应以形成下列式(2)的6-异丙烯基-3-甲基-9-癸烯醇;并对6-异丙烯基-3-甲基-9-癸烯醇(2)进行乙酰化以形成6-异丙烯基-3-甲基-9-癸烯基醋酸酯(3)。